On-site detection equipment and method for heat transfer coefficient based on building envelope structure

Abstract

The invention relates to the technical field of detection equipment, in particular to on-site detection equipment and method for a heat transfer coefficient based on a building envelope. And the attaching assembly comprises a movable plate, and one side of the box body is fixedly connected with a movable sliding groove. According to the on-site detection equipment and method for the heat transfer coefficient based on the building envelope structure, the attaching assembly covers the side, attached to the wall surface, of the box body, the gasket is attached to the wall surface, and air between the gasket and the wall surface is extruded and exhausted, so that the gasket is adsorbed to the wall surface, and air entering is reduced together with the isolation cloth; the side, attached to the wall surface, of the box body is kept closed, the influence of external wind is isolated, the interior is kept warm, the gasket is heated to expand, the device is attached to the wall surface more tightly, meanwhile, extrusion force is provided for the box body towards one side of the wall surface through the moving cylinder, attachment of the box body and the wall surface is improved, meanwhile, supporting force is provided, the device is convenient to install, and the device is easy to operate and convenient to use. The device is convenient to install and suitable for on-site detection of building outer walls.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to an on-site detection device and method based on the heat transfer coefficient of a building envelope structure. Background Art

[0002] The thermal performance of the building envelope will directly affect the indoor thermal environment, and thus affect the building's energy consumption. The heat transfer coefficient is the most important parameter in the thermal field of the building envelope. The heat transfer coefficient of the building envelope is a key parameter for measuring the heat transfer capacity of the building's external envelope (such as walls, roofs, doors and windows, etc.), which directly affects the building's thermal insulation performance and energy consumption. In order to determine whether the building meets the design requirements during operation, it is necessary to conduct on-site testing of the heat transfer coefficient of the building envelope.

[0003] When conducting on-site testing of the heat transfer coefficient of a building envelope structure, the detection device is generally installed indoors, where the temperature is kept constant and is less affected by wind speed and air. However, it is difficult to find a suitable exterior wall because there are furniture, windows and other objects installed indoors. Outdoors, there are fewer obstructions on the wall, making it easier to find a suitable exterior wall for testing. Therefore, an on-site detection device and method based on the heat transfer coefficient of a building envelope structure are proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide an on-site detection device and method for the heat transfer coefficient of a building envelope structure, so as to solve the problem raised in the above background art that it is difficult to find a suitable exterior wall indoors where furniture, windows and other objects are installed, and it is easy to find a suitable exterior wall for detection outdoors where there are few obstructions. To achieve the above purpose, the present invention provides the following technical solutions: an on-site detection device and method for the heat transfer coefficient of a building envelope structure, comprising a box; The attachment assembly comprises a movable plate, one side of the box body is fixedly connected to a movable slide, the movable plate is slidably connected to the inner wall of the movable slide, one side of the movable plate is fixedly connected to an isolation cloth, one side of the movable plate is fixedly connected to a connecting square tube, the inner wall of the connecting square tube is slidably connected to a support column, a side surface of the support column is provided with a limiting groove, the limiting grooves are provided in multiple groups and are evenly distributed, one side of the connecting square tube passes through the limiting column, one end of the limiting column is threadedly connected to the limiting groove, the surface of the isolation cloth is movably connected to the support column through a connecting rope, one end of the support column is fixedly connected to a gasket, the isolation cloth is adhered to one side of the gasket, and one side of the box body is fixedly connected to an extrusion pad; The interior of the box body is fixedly installed with a heating box, one side of the box body is fixedly connected to a connecting cylinder, the inner ring surface of the connecting cylinder is clamped with a moving cylinder, the inner ring surface of the moving cylinder is threadedly connected to a rotating rod, the side surface of the rotating rod is sleeved with a shaft sleeve, the side surface of the shaft sleeve is fixedly connected to a connecting block, one side of the connecting block is hinged with a bracket, one end of the bracket is fixedly connected to a supporting cylinder 2, the inner ring surface of the supporting cylinder 2 is sleeved with a moving rod 2, and one end of the moving rod 2 is fixedly connected to a supporting foot 2. This on-site detection equipment and method based on the heat transfer coefficient of the building envelope structure is through The attachment component covers the side of the box that fits the wall, and the gasket fits the wall, squeezing out the air between the gasket and the wall, causing the gasket to be adsorbed to the wall, and together with the insulating cloth, reducing the entry of air, so that the side of the box that fits the wall remains airtight, isolating the influence of external wind, and keeping the interior warm. The gasket expands due to heat, making the device fit more closely to the wall. At the same time, the moving cylinder provides extrusion force to the box toward the wall side, thereby improving the fit between the box and the wall and providing support force to facilitate the installation of the device. The device is simple to operate and easy to install, and is suitable for on-site inspection of building exterior walls.

[0005] Further preferably, a multifunctional data collector is provided on one side of the box, and the multifunctional data collector is provided separately from the box. The multifunctional data collector is sequentially connected to a first temperature sensor, a second temperature sensor and a third temperature sensor.

[0006] Further preferably, the side surface of the connecting cylinder is threadedly connected to a sleeve, and the side surface of the movable cylinder is sleeved with a threaded sleeve. This on-site detection equipment and method based on the heat transfer coefficient of the building envelope structure rotates the sleeve so that a section of the sleeve is threadedly connected to the threaded sleeve, thereby connecting the connecting cylinder and the movable cylinder, which facilitates the rapid disassembly and installation of the box and the movable cylinder.

[0007] The cam is fixedly provided with a support leg, and the cam is fixedly provided with a support leg on the inner ring surface of the cam. The cam is fixedly provided with a support leg, and the cam is fixedly provided with a support leg on the inner ring surface of the cam. The cam is fixedly provided with a support leg, and the cam is fixedly provided with a support leg. The cam is provided with a limit hole, and a plurality of groups are evenly distributed. One group of the limit holes is threadedly connected to a positioning pin, and one end of the positioning pin passes through the support tube. The support tube and the moving rod are the same as the support tube and the moving rod. The side surface of the support tube is provided with the same limit hole and positioning pin. The on-site detection equipment and method for the heat transfer coefficient of the building envelope structure can adjust the height of the box by adjusting the length of the moving rod extending from the inside of the support tube and threading the positioning pin with the limit hole, so that the device can detect walls of different heights and provide support for the device. It is convenient for the installation and fixation of the device. The support tube and the moving rod are used to adjust the height of the moving cylinder to make it consistent with the height of the box, so as to provide extrusion force on the box and maintain the stability of the device.

[0008] Further preferably, a bolt passes through one side of the bracket, one end of the bolt is threadedly connected to the connecting block, the side surface of the movable rod 2 is fixedly connected with a hinge, and the inner wall of the hinge is hinged with a support arm. In this on-site detection equipment and method based on the heat transfer coefficient of the building envelope structure, the support arm provides auxiliary support for the movable rod 2, thereby improving the stability of the movable rod 2 and reducing shaking.

[0009] Further preferably, the movable slide groove is penetrated by a second positioning pin, and two limiting holes are opened on one side of the movable plate and are evenly distributed in multiple groups. One end of the second positioning pin is threadedly connected to the second limiting hole. This on-site detection equipment and method based on the heat transfer coefficient of the building envelope structure can adjust the moving distance of the movable plate and keep the position fixed by connecting the second positioning pin with the second limiting hole, so that the attached component can effectively fit the wall surface, reduce gaps, and thereby reduce air entry.

[0010] Further preferably, the inner wall of the box is movably connected to a first auxiliary test material plate, and the inner wall of the box is movably connected to a second auxiliary test material plate.

[0011] A method for using an on-site detection device for the heat transfer coefficient of a building envelope structure, comprising the following steps: Step 1: installing a second auxiliary test material plate inside a box, arranging a second temperature sensor at the center of the outer surface of the second auxiliary test material plate, installing a first auxiliary test material plate on one side of the second auxiliary test material plate, and arranging the first temperature sensor at the center of the joint between the first and second auxiliary test material plates, and connecting the second temperature sensor and the information end of the first auxiliary test material plate to a multifunctional data acquisition instrument; Step 2: Move the box to the wall to be tested, with support foot 1 in contact with the ground. Pull the moving rod 1 to move inside the support tube 1 to adjust the height of the box and make it fit the wall. Fit the first auxiliary test material plate and the compression pad to the wall. Turn the positioning pin 1 to thread it into the limit hole 1 at the height to fix the height of the box. Step 3: The moving cylinder is engaged with the connecting cylinder. By rotating the sleeve, one section of the sleeve is threadedly connected to the threaded sleeve, thereby connecting the connecting cylinder to the moving cylinder. Pull the moving rod 2 to extend the moving rod 2 from the supporting cylinder 2, and make the supporting foot 2 contact the ground. At this time, rotate the positioning pin 1 on the supporting cylinder 2 to make it threadedly connected to the limiting hole 1 at the height, fixing the height of the connecting cylinder. At this time, rotate the rotating rod, and the moving cylinder moves forward through the rotation of the rotating rod, thereby pressing against the box body, so that the box body, the first auxiliary test material plate and the extrusion pad are in close contact with the wall. Step 4: Push the movable plate, which drives the connecting square tube forward and the supporting column forward at the same time, so that the gasket contacts the wall. Press the gasket to expel the air inside the gasket, so that the gasket and the wall are adsorbed. Rotate the second positioning pin to thread it into the second limiting hole on the movable plate to fix the position of the movable plate and keep the attached component fixed. Step 5: Rotate the support arm through the hinge and contact it with the ground. The support arm provides auxiliary support for the second moving rod. At the same time, install the third temperature sensor on the other side of the wall. The signal transmission ends of the first temperature sensor, the second temperature sensor and the third temperature sensor are connected to the multi-function data acquisition instrument. The heating box starts heating. The multi-function data acquisition instrument is placed near the box and the heat transfer coefficient data is analyzed by an external computer.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the side of the box body that is in contact with the wall is covered by an attachment component, and the gasket is in contact with the wall surface, squeezing out the air between the gasket and the wall surface, causing the gasket to be adsorbed to the wall surface, and together with the insulating cloth, reducing the entry of air, so that the side of the box body that is in contact with the wall surface remains airtight, isolating the influence of external wind, and keeping the interior warm. The gasket expands due to heat, making the device fit more closely to the wall surface. At the same time, the moving cylinder provides squeezing force to the box body toward the wall surface, thereby improving the contact between the box body and the wall surface, and providing supporting force, which is convenient for installation of the device. The device is simple to operate and easy to install, and is suitable for on-site inspection of building exterior walls.

[0013] In the present invention, by adjusting the length of the moving rod 1 extending from the inside of the support tube 1 and threading the positioning pin 1 with the limiting hole 1, the height of the box can be adjusted, which is convenient for the device to detect walls of different heights. At the same time, support is provided for the device, which is convenient for the installation and fixation of the device. The support tube 2 and the moving rod 2 are used to adjust the height of the moving tube so that it is consistent with the height of the box, which is convenient for providing extrusion force on the box and maintaining the stability of the device.

[0014] In the present invention, by connecting the second positioning pin with the second limiting hole, the distance of movement of the movable plate can be adjusted and the position can be kept fixed, so that the attachment component can be effectively fitted to the wall surface, gaps can be reduced, and air entry can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the rear-view stereoscopic structure of the present invention; Figure 3 This is an enlarged structural diagram of point A of the present invention; Figure 4 This is a front perspective structural diagram of the present invention; Figure 5This is an enlarged structural diagram of point B of the present invention; Figure 6 It is a partial cross-sectional structural schematic diagram of the present invention; Figure 7 This is an enlarged structural diagram of position C of the present invention; Figure 8 This is a schematic diagram of the cross-sectional structure of the equipment installation of the present invention.

[0016] In the figure: 1, box body; 2, moving slide; 3, attachment component; 4, support cylinder 1; 5, heating box; 6, limit hole 1; 7, moving rod 1; 8, positioning pin 1; 9, support foot 1; 10, multi-function data acquisition instrument; 11, connecting cylinder; 12, threaded sleeve; 13, sleeve; 14, moving cylinder; 15, rotating rod; 16, supporting cylinder 2; 17, moving rod 2; 18, hinge; 19, support arm; 20, supporting foot 2; 21, bracket; 22, Connecting block; 23. Bolt; 24. Bushing; 25. Second limiting hole; 26. Second positioning pin; 27. First auxiliary test material plate; 28. Second auxiliary test material plate; 29. First temperature sensor; 30. Second temperature sensor; 31. Third temperature sensor; 301. Moving plate; 302. Isolation cloth; 303. Connecting square tube; 304. Support column; 305. Limiting groove; 306. Limiting column; 307. Washer; 308. Extrusion pad. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] See also Figures 1-8The present invention provides a technical solution: an on-site detection device and method based on the heat transfer coefficient of a building envelope structure, comprising a box body 1, which is mainly assembled from plywood. The inner and outer wall materials of the box body are both plywood, and polystyrene board material is sandwiched between the plywood. A multifunctional data collector 10 is provided on one side of the box body 1. The multifunctional data collector 10 is mainly used to collect data transmitted by sensors. The multifunctional data collector 10 is set separately from the box body 1. The multifunctional data collector 10 is sequentially connected to a first temperature sensor 29, a second temperature sensor 30, and a third temperature sensor 31. The temperature data collected by the first temperature sensor 29, the second temperature sensor 30, and the third temperature sensor 31 are transmitted to the multifunctional data acquisition instrument 10 via a data cable, and after processing, are transmitted to an external computer via a data cable. A first auxiliary test material plate 27 is movably connected to the inner wall of the box 1, and a second auxiliary test material plate 28 is movably connected to the inner wall of the box 1. The opening of the box 1 is the same size as the auxiliary test material plate, and a small opening is reserved on the side wall of the box 1. The data cables for the first temperature sensor 29 and the second temperature sensor 30 can pass through the reserved opening; The attachment component 3 includes a movable plate 301, a movable slide 2 is fixedly connected to one side of the box body 1, the movable plate 301 is slidably connected to the inner wall of the movable slide 2, and an insulating cloth 302 is fixedly connected to one side of the movable plate 301. The insulating cloth 302 is folded together when not in use and is made of aluminum foil and fiberglass cloth, which is a material with good thermal insulation performance. The gaps between the glass fibers can prevent the transfer of heat, and the aluminum foil has an extremely low emissivity and can reflect thermal radiation, reducing the absorption and loss of heat. A connecting square tube 303 is fixedly connected to one side of the movable plate 301, and a support column 304 is slidably connected to the inner wall of the connecting square tube 303. A limiting groove 305 is provided on the side surface of the support column 304. The limiting groove 305 is provided in multiple groups and is evenly distributed. The limiting groove 305 is used to fix the position of the support column 304 after the support column 304 is extended. One side of the connecting square tube 303 passes through a limiting post 306. The surface of the limiting post 306 is provided with a thread and is threadedly connected to the connecting square tube 303. One end of the limiting post 306 is threadedly connected to the limiting groove 305. The surface of the insulating cloth 302 is movably connected to the support post 304 through a connecting rope. The support post 304 drives the insulating cloth 302 to stretch through the connecting rope and fixes the surface of the insulating cloth 302. One end of the support post 304 is fixedly connected to a gasket 307. The gasket 307 expands when heated. The material is silicone rubber with hollow microspheres of expandable filler added. The expandable filler decomposes and produces gas or physically expands when heated, which promotes the increase of the overall volume. After cooling, the elastomer chain segment shrinks, driving the filler to reset. The insulating cloth 302 is pasted to one side of the gasket 307. One side of the box body 1 is fixedly connected to an extrusion pad 308. The extrusion pad 308 is made of rubber and has elasticity and can be squeezed. A heating box 5 is fixedly installed inside the box body 1. The box wall of the heating box 5 consists of a double-layer frame. The filling material between the frames is a heat-insulating material with a high thermal resistance value, which is foamed polyurethane. The temperature-controlled box has the functions of heating and cooling, and can be switched accordingly with the change of seasons. A connecting cylinder 11 is fixedly connected to one side of the box body 1. The inner ring surface of the connecting cylinder 11 is clamped with a moving cylinder 14. The side surface of the connecting cylinder 11 is threadedly connected with a sleeve 13. The side surface of the moving cylinder 14 is sleeved with a threaded sleeve 12. The thread of the threaded sleeve 12 is set on the outside. The inner ring surface of the moving cylinder 14 is threadedly connected with a rotating rod 15. The side surface of the rotating rod 15 is sleeved with a shaft sleeve 24. The side surface of the shaft sleeve 24 is fixedly connected to a connecting block 22. A bracket 21 is hinged on one side of the connecting block 22. The connecting block 22 rotates through the bracket 21. One end of the bracket 21 is fixedly connected A support tube 2 16 is provided, and a moving rod 2 17 is sleeved on the inner ring surface of the support tube 2 16, and one end of the moving rod 2 17 is fixedly connected to a support foot 20. A support tube 1 4 is fixedly connected to one side of the box body 1, and a moving rod 7 is sleeved on the inner ring surface of the support tube 14, and one end of the moving rod 7 is fixedly connected to a support foot 9. A limiting hole 6 is provided on the side surface of the support tube 14 and multiple groups are evenly distributed. One group of limiting holes 6 is threadedly connected with a positioning pin 8, and the positioning pin 8 is threadedly connected to the limiting hole 6 for adjusting the height of the box body 1 and fixing the position. One end of the positioning pin 8 passes through the support tube 14, and the positioning pin 8 is threadedly connected to the support tube 4. The support tube 2 16 and the moving rod 2 17 are the same as the support tube 14 and the moving rod 7. The side surface of the support tube 2 16 is provided with the same limiting hole 6 and positioning pin 8.

[0019] In this embodiment, Figure 4 and Figure 5 As shown, a bolt 23 passes through one side of the bracket 21, and one end of the bolt 23 is threadedly connected to the connecting block 22. The bolt 23 limits the rotation of the connecting block 22. The side surface of the movable rod 17 is fixedly connected to the hinge 18, and the inner wall of the hinge 18 is hinged with a support arm 19. The support arm 19 can rotate a certain angle through the hinge 18.

[0020] In this embodiment, Figure 1 、 Figure 2 and Figure 6 As shown, the movable slide 2 is penetrated by a second positioning pin 26, which is threadedly connected to the penetration point of the movable slide 2. One side of the movable plate 301 is provided with a second limiting hole 25 and multiple groups are evenly distributed. One end of the second positioning pin 26 is threadedly connected to the second limiting hole 25, and the second positioning pin 26 is threadedly connected to one group of the second limiting holes 25, which is used to assist the movable plate 301 in adjusting the extension distance and keep the movable plate 301 fixed.

[0021] An on-site detection device and method based on the heat transfer coefficient of a building envelope structure includes the following steps: Step 1: Install the second auxiliary test material plate 28 inside the box 1, set the second temperature sensor 30 at the center of the outer surface of the second auxiliary test material plate 28, install the first auxiliary test material plate 27 on one side of the second auxiliary test material plate 28, and set the first temperature sensor 29 at the center of the joint between the first auxiliary test material plate 27 and the second auxiliary test material plate 28. Connect the second temperature sensor 30 and the information end of the first auxiliary test material plate 27 to the multifunctional data acquisition instrument 10; Step 2: Move the box 1 to the wall to be tested, with the support foot 9 in contact with the ground. Pull the moving rod 7 to move inside the support tube 4 to adjust the height of the box 1 and make it fit against the wall. The first auxiliary test material plate 27 and the compression pad 308 are in contact with the wall. Turn the positioning pin 8 to thread it into the limit hole 6 at the height to fix the height of the box 1. Step 3: The moving cylinder 14 is engaged with the connecting cylinder 11. By rotating the sleeve 13, a section of the sleeve 13 is threadedly connected to the threaded sleeve 12, thereby connecting the connecting cylinder 11 to the moving cylinder 14. The moving rod 2 17 is pulled to extend the moving rod 2 17 from the supporting cylinder 2 16, and the supporting foot 2 20 is in contact with the ground. At this time, the positioning pin 1 8 on the supporting cylinder 2 16 is rotated to be threadedly connected to the limiting hole 1 6 at the same height, fixing the height of the connecting cylinder 11. At this time, the rotating rod 15 is rotated, and the moving cylinder 14 moves forward through the rotation of the rotating rod 15, thereby pressing against the box body 1, so that the box body 1, the first auxiliary test material plate 27 and the extrusion pad 308 are in close contact with the wall. Step 4: Push the movable plate 301, which drives the connecting square tube 303 forward and the supporting column 304 forward, so that the washer 307 contacts the wall. Press the washer 307 to expel the air inside the washer 307, so that the washer 307 is adsorbed on the wall. Rotate the second positioning pin 26 to thread it into the second limiting hole 25 on the movable plate 301 to fix the position of the movable plate 301 and keep the attachment component 3 fixed. Step 5: Turn the support arm 19 out through the hinge 18 and make contact with the ground. The support arm 19 provides auxiliary support for the movable rod 2 17. At the same time, the third temperature sensor 31 is installed on the other side of the wall. The signal transmission ends of the first temperature sensor 29, the second temperature sensor 30 and the third temperature sensor 31 are connected to the multi-function data acquisition instrument 10. The heating box 5 starts heating. The multi-function data acquisition instrument 10 is placed near the box body 1, and the heat transfer coefficient data is analyzed by an external computer.

[0022] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An on-site detection device and method based on the heat transfer coefficient of building envelope structure, characterized in that: comprising a box (1); The attachment component (3) comprises a movable plate (301), one side of the box body (1) is fixedly connected to a movable slide groove (2), the movable plate (301) is slidably connected to the inner wall of the movable slide groove (2), one side of the movable plate (301) is fixedly connected to an insulating cloth (302), one side of the movable plate (301) is fixedly connected to a connecting square tube (303), the inner wall of the connecting square tube (303) is slidably connected to a support column (304), and a side surface of the support column (304) is provided with a limiting groove (30 5), the limiting grooves (305) are provided in multiple groups and are evenly distributed, one side of the connecting square tube (303) passes through a limiting column (306), one end of the limiting column (306) is threadedly connected to the limiting groove (305), the surface of the insulating cloth (302) is movably connected to the support column (304) through a connecting rope, one end of the support column (304) is fixedly connected to a gasket (307), the insulating cloth (302) is adhered to one side of the gasket (307), and one side of the box body (1) is fixedly connected to an extrusion pad (308); A heating box (5) is fixedly installed inside the box body (1), and a connecting tube (11) is fixedly connected to one side of the box body (1), and the inner ring surface of the connecting tube (11) is clamped with the moving tube (14), and the inner ring surface of the moving tube (14) is threadedly connected to the rotating rod (15), and the side surface of the rotating rod (15) is sleeved with a shaft sleeve (24), and the side surface of the shaft sleeve (24) is fixedly connected to a connecting block (22), and one side of the connecting block (22) is hinged with a bracket (21), and one end of the bracket (21) is fixedly connected to a supporting tube 2 (16), and the inner ring surface of the supporting tube 2 (16) is sleeved with a moving rod 2 (17), and one end of the moving rod 2 (17) is fixedly connected to a supporting foot 2 (20).

2. The on-site detection device and method for heat transfer coefficient of building envelope structure according to claim 1, characterized in that: A multifunctional data acquisition device (10) is provided on one side of the box (1). The multifunctional data acquisition device (10) is provided separately from the box (1). The multifunctional data acquisition device (10) is sequentially connected to a first temperature sensor (29), a second temperature sensor (30), and a third temperature sensor (31).

3. The on-site detection device and method for heat transfer coefficient of building envelope structure according to claim 1 is characterized by: The side surface of the connecting cylinder (11) is threadedly connected to a sleeve (13), and the side surface of the moving cylinder (14) is sleeved with a threaded sleeve (12).

4. The on-site detection device and method for heat transfer coefficient of building envelope structure according to claim 1 is characterized by: One side of the box body (1) is fixedly connected to a support tube (4), the inner ring surface of the support tube (4) is sleeved with a moving rod (7), one end of the moving rod (7) is fixedly connected to a support foot (9), the side surface of the support tube (4) is provided with a limiting hole (6) and multiple groups are evenly distributed, one group of the limiting holes (6) is threadedly connected to a positioning pin (8), one end of the positioning pin (8) passes through the support tube (4), the support tube (16) and the moving rod (17) are the same as the support tube (4) and the moving rod (7), and the side surface of the support tube (16) is provided with the same limiting hole (6) and positioning pin (8).

5. The on-site detection device and method for heat transfer coefficient of building envelope structure according to claim 1 is characterized by: A bolt (23) passes through one side of the bracket (21), one end of the bolt (23) is threadedly connected to the connecting block (22), a hinge (18) is fixedly connected to the side surface of the second moving rod (17), and a support arm (19) is hinged to the inner wall of the hinge (18).

6. The on-site detection device and method for heat transfer coefficient of building envelope structure according to claim 1, characterized in that: The movable slide groove (2) is penetrated by a second positioning pin (26), and one side of the movable plate (301) is provided with two limiting holes (25) and multiple groups are evenly distributed, and one end of the second positioning pin (26) is threadedly connected to the second limiting hole (25).

7. The on-site detection device and method for heat transfer coefficient of building envelope structure according to claim 2, characterized in that: The inner wall of the box (1) is movably connected to a first auxiliary test material plate (27), and the inner wall of the box (1) is movably connected to a second auxiliary test material plate (28).

8. The on-site detection device and method for heat transfer coefficient of building envelope structure according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: The second auxiliary test material plate (28) is installed inside the box (1), the second temperature sensor (30) is set at the center position of the outer surface of the second auxiliary test material plate (28), the first auxiliary test material plate (27) is installed on one side of the second auxiliary test material plate (28), and the first temperature sensor (29) is set at the center position of the joint between the first auxiliary test material plate (27) and the second auxiliary test material plate (28), and the second temperature sensor (30) and the information end of the first auxiliary test material plate (27) are connected to the multifunctional data acquisition instrument (10); Step 2: Move the box (1) to the wall to be tested, make the support foot (9) contact the ground, pull the moving rod (7) to move inside the support tube (4), adjust the height of the box (1), and make the box (1) fit the wall, make the first auxiliary test material plate (27) and the extrusion pad (308) fit the wall, rotate the positioning pin (8) to make it threadedly connected with the limit hole (6) at the height, and fix the height of the box (1); Step 3: The moving cylinder (14) is engaged with the connecting cylinder (11), and the sleeve (13) is rotated so that a section of the sleeve (13) is threadedly connected to the threaded sleeve (12), thereby connecting the connecting cylinder (11) to the moving cylinder (14). The moving rod (17) is pulled so that the moving rod (17) extends from the supporting cylinder (16), and the supporting foot (20) is in contact with the ground. At this time, the positioning pin (8) on the supporting cylinder (16) is rotated so that it is threadedly connected to the limiting hole (6) at the height thereof, thereby fixing the height of the connecting cylinder (11). At this time, the rotating rod (15) is rotated, and the moving cylinder (14) moves forward through the rotation of the rotating rod (15), thereby pressing against the box (1), so that the box (1), the first auxiliary test material plate (27) and the extrusion pad (308) are in close contact with the wall. Step 4: Push the movable plate (301), the movable plate (301) drives the connecting square tube (303) to move forward, and at the same time drives the supporting column (304) to move forward, and makes the gasket (307) contact the wall surface, and at the same time presses the gasket (307) to discharge the air inside the gasket (307), so that the gasket (307) and the wall surface are adsorbed, and the position of the movable plate (301) is fixed by rotating the second positioning pin (26) and the second limiting hole (25) on the movable plate (301), so as to keep the attachment component (3) fixed, and the insulating cloth (302) isolates the influence of the external wind and keeps the internal temperature warm; Step 5: The support arm (19) is rotated out through the hinge (18) and contacts the ground. The support arm (19) provides auxiliary support for the second movable rod (17). At the same time, the third temperature sensor (31) is installed on the other side of the wall. The signal transmission ends of the first temperature sensor (29), the second temperature sensor (30) and the third temperature sensor (31) are connected to the multifunctional data acquisition instrument (10). The heating box (5) starts heating. The gasket (307) is affected by the heating and expands itself, so that the device fits more closely with the wall, further reducing the impact of the entry of outside air. The multifunctional data acquisition instrument (10) is placed near the box (1) and the heat transfer coefficient data is analyzed by an external computer.

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